Hot Fill Packaging
-
Upload
somasundaram-yamaraja -
Category
Documents
-
view
221 -
download
0
Transcript of Hot Fill Packaging
-
8/3/2019 Hot Fill Packaging
1/15
South Asian Petrochem Ltd. Hot fill Packaging
Hot fill Packaging:8 Key Aspects
Y.SomasundaramSouth Asian Petrochem Ltd.
-
8/3/2019 Hot Fill Packaging
2/15
South Asian Petrochem Ltd. Hot fill Packaging
Hot fill: Packaging Objectives
To pack fruit base drinkswithout or with minimumpreservatives.
Natural flavor preserved.
No sodium salts.
Transparent family sizepacking.
Easy and convenient means
to dispense content as perneed.
Unbreakable.
Recyclable.
-
8/3/2019 Hot Fill Packaging
3/15
South Asian Petrochem Ltd. Hot fill Packaging
PET bottles - Hot fill & Aseptic (USA)
600
1200
2000
2700
3100
0
500
1000
1500
2000
2500
3000
3500
Bottles(m
illion)
Fruit juices
Fruit juices 600 1200 2000 2700 3100
2000 2001 2002 2003 2004
-
8/3/2019 Hot Fill Packaging
4/15
South Asian Petrochem Ltd. Hot fill Packaging
Hot fill Indian Scenario
Launched by Maa fruits,Dharmapuri & Fruitnik atChennai in end 2003. 28 mm Thick neck bottles, with
higher Tg resins.
Neck crystallized bottles. 500 / 1000 ml bottles
Pepsi launched its hot fill with Slice in 2004. Neck crystallized bottles.
28 mm Alcoa neck.
500ml bottle. Coke followed with Maaza in the same year.
Neck crystallized bottles.
28 mm Alcoa neck.
500ml bottle.
-
8/3/2019 Hot Fill Packaging
5/15
South Asian Petrochem Ltd. Hot fill Packaging
What is Hot, for a Hot fill
Hot fill temperature (82 deg C)
High acid fruit drinks (< 4.5 pH)
Hot fill temperature (92 deg C)
Low acid fruit drinks (> 4.5 pH > 6.0)
Ex. Tomato juice, low acid tea (green tea)
-
8/3/2019 Hot Fill Packaging
6/15
South Asian Petrochem Ltd. Hot fill Packaging
1: Resin (PET)
Faster rate ofCrystallization.
Easy process ability.
PET Homo polymer.
Lower IV = 0.76 dl/g.
-
8/3/2019 Hot Fill Packaging
7/15
South Asian Petrochem Ltd. Hot fill Packaging
2: Preform
High wall thickness to yieldthicker bottle.
Optimum design for strainhardening & crystallinity.
Too much stretching can lead toresidual stresses at final bottle,leading to higher shrinkage
Crystallized neck to withstandtemperature during filling.
Wide / thick neck to avoidcontact of hot liquid &deformation.
-
8/3/2019 Hot Fill Packaging
8/15
South Asian Petrochem Ltd. Hot fill Packaging
3: Bottle design
Panels to absorb anddissipate vacuum created inbottle during cooling ofcontent.
Base ribs to withstandtemperature and liquid fillingforce.
Rigid circular ribs withstanddeforming forces.
Higher post mold shrinkageallowance in mold design.
-
8/3/2019 Hot Fill Packaging
9/15
South Asian Petrochem Ltd. Hot fill Packaging
6: Blowing process
Higher preform temperature for blowing.
Hot blow mold surfaces to increase the bottle wall crystallinity through
thermal crystallization. Reduce the orientation stresses in the bottle wall.
Internal cooling of bottle by stretch rod, to harden inner wall beforeejection.
Quick opening of mold cavities to avoid softening of bottle wall aftercooling.
-
8/3/2019 Hot Fill Packaging
10/15
South Asian Petrochem Ltd. Hot fill Packaging
4: Bottle Performance
Less than 1% thermal shrinkage onhot filling conditions.
Base clearance to be maintained.
No unequal deformation in baseleading to tilting / rocking ofbottles.
No warping at neck seal surface.
No leakage at seal surface.
-
8/3/2019 Hot Fill Packaging
11/15
South Asian Petrochem Ltd. Hot fill Packaging
5: Closures
Closure material to takecare of contenttemperature at filling.
Single piece closure toavoid the effect ofwarping of wad.
Sealing surfaces to takecare of the expansion &shrinkage during fillingand cooling.
-
8/3/2019 Hot Fill Packaging
12/15
South Asian Petrochem Ltd. Hot fill Packaging
7: Filling process
Fill close to brimful in crystallizedneck finish.
Fill up to NSR (Neck Support Ring)in non-crystallized neck finish.
Contact of high temperature fillinghead with the Non-crystallizedneck finish avoided.
Quick capping, to avoid productcontact with ambient air & cooling.
Caps to be sterilized beforecapping.
-
8/3/2019 Hot Fill Packaging
13/15
South Asian Petrochem Ltd. Hot fill Packaging
8: Conditioning
Tilt bottle to wet & warm the closure immediatelyafter capping.
Water shower the bottle to lower temperature, beforeputting on shrink sleeve label.
Water quality in shower to be clean, in order to avoidmold growth between the bottle & shrink film / pilferproof ring.
-
8/3/2019 Hot Fill Packaging
14/15
South Asian Petrochem Ltd. Hot fill Packaging
Advantages over TetraPak
Content is visible, gives customer the feel ofthe product.
User can see the quantity left out in thecontainer after use.
Environment friendly, easily recyclable.
Higher top load strength so more products can
be stacked and stored in smaller space & alsotransported without damage.
-
8/3/2019 Hot Fill Packaging
15/15
South Asian Petrochem Ltd. Hot fill Packaging
New development
Panel-less Hot fill bottle